Floating shelf



FIG. 1 is a front view showing my new design for a floating shelf;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a left side view thereof, a right side being a mirror image. 

The ornamental design for: floating shelf, as shown and described. 